Archive for the 'Physics' Category

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Hydrogen cars? No, this is a lot more interesting. I’ve had in mind that there was a possibility for us to use permanent magnets as a source of power that would be clean and would cost almost nothing to produce. I’ve been thinking about the various prototypes that could be created and here’s what have been published lately.

The Perendev magnet motor is claimed to be driven soley by permanent magnets in a particular configuration that includes proper shielding or directing of the magnetic field. The output claimed for the scalable device’s present configuration is 20 kW, attached to a generator. Perendev claims that the unit has been tested in independent laboratories and that no diminution of magnet strength is observed over time.

Imagine wearing a t-shirt where you’d be able to display light animation. Well, with Philips new technology called Lumalive, it’s now possible. Fully integrated into fabrics, the LEDs doesn’t compromise the softness or flexibility of the cloth.

Although the technology has been developed only recently, […] Philips Research has made immense progress in fully integrating Lumalive fabrics into garments demonstrated by the jackets worn by Philipsâ€™ hostesses at the show. These first-generation jackets are ready for commercialization by companies partnering with Philips Research, particularly those in the promotional industry looking for a new, high-impact medium.

This pyrolytic graphique square floats between four 12mm neodymium magnets. North/south poles alternate in order to get the square “trapped” and to cause the levitation effect.

The floating square is pyrolytic graphite, which is extremely diamagnetic. […] In effect it is a single crystal of graphite, and because the resulting graphite is very highly ordered, pyrolytic graphite is extremely diamagnetic. Also the density of pyrolytic graphite is fairly low. The combination of these two factors – the low density and the strong diamagnetic effect – makes this amazing demonstration possible.

The National Institute of Standards and Technology (NIST) created a clock which uses ultraviolet radiation and a single mercury ion interactions. Oscillating around 100 000 times faster than cesium-cloud microwave (the old method of getting time), ultraviolet electromagnetic waves allow us to get a more precise definition of the second.
It’s been said that the clock would be precise as much that it’ll take 70 million years before it’s off a second.

With further improvements since they submitted their new report, the NIST researchers have made a clock that’s about 10 times as precise as the world’s cesium standard, Bergquist says. According to NIST figures, the cesium standard would be off by no more than 1 second in 70 million years of continuous operation.